TY  - RPRT
TI  - The OPD-1 trial frame for children.
AU  - L I Aizenshtat
AU  - Y Z Rozenblyum
PY  - 1975
DO  - 10.1007/bf00556845
UR  - https://pubmed.ncbi.nlm.nih.gov/1109607/
ID  - 1109607
ER  -